After getting burned once or twice for failing to cover some base, they develop a fool-proof routine to prevent that from happening again, then swear their eternal allegiance to it.

在某些地方上闯过一两次祸之后，他们就会制定出一个易于执行的例程去防止类似事件再次发生，然后发誓会永远拥护它。

youdao

I swore to share your joy and your pain, and I swear it all over again.

我发誓愿与你分享一切喜悦与伤悲，我将爱你此生不渝。

youdao

I swore to share your joy and your pain, and I swear it all over again.

我发誓愿与你分享一切喜悦与伤悲，我将爱你此生不渝。

youdao